I used Carbon Express CXL 150's for the first time this year, and fell in love with them. They group extraordinarily well, and I am getting the benefit of an alum 2312 arrow in diameter with a lot less weight, which means I can shoot less poundage. As with most carbon arrows though I highly recommend the use of the uni-bushing system, as it will help save your arrows if you "rear end" them. Without uni-bushings carbon arrows have a tendency to split when hit in the back by a direct hit.